 package hitool.core.beanutils.reflection;

import java.lang.reflect.Array;
import java.util.Arrays;

 /*
  * Miscellaneous object utility methods.
  * Mainly for internal use within the framework.
  *
  * <p>Thanks to Alex Ruiz for contributing several enhancements to this class!
  *
  * @author Juergen Hoeller
  * @author Keith Donald
  * @author Rod Johnson
  * @author Rob Harrop
  * @author Chris Beams
  * @since 19.03.2004
  */
 public abstract class ObjectUtils {

 	private static final int INITIAL_HASH = 7;
 	private static final int MULTIPLIER = 31;

 	private static final String EMPTY_STRING = "";
 	private static final String NULL_STRING = "null";
 	private static final String ARRAY_START = "{";
 	private static final String ARRAY_END = "}";
 	private static final String EMPTY_ARRAY = ARRAY_START + ARRAY_END;
 	private static final String ARRAY_ELEMENT_SEPARATOR = ", ";


 	/*
 	 * Return whether the given throwable is a checked exception:
 	 * that is, neither a RuntimeException nor an Error.
 	 * @param ex the throwable to check
 	 * @return whether the throwable is a checked exception
 	 * @see java.lang.Exception
 	 * @see java.lang.RuntimeException
 	 * @see java.lang.Error
 	 */
 	public static boolean isCheckedException(Throwable ex) {
 		return !(ex instanceof RuntimeException || ex instanceof Error);
 	}

 	/*
 	 * Check whether the given exception is compatible with the specified
 	 * exception types, as declared in a throws clause.
 	 * @param ex the exception to check
 	 * @param declaredExceptions the exception types declared in the throws clause
 	 * @return whether the given exception is compatible
 	 */
 	public static boolean isCompatibleWithThrowsClause(Throwable ex, Class<?>... declaredExceptions) {
 		if (!isCheckedException(ex)) {
 			return true;
 		}
 		if (declaredExceptions != null) {
 			for (Class<?> declaredException : declaredExceptions) {
 				if (declaredException.isInstance(ex)) {
 					return true;
 				}
 			}
 		}
 		return false;
 	}

 	/*
 	 * Determine whether the given object is an array:
 	 * either an Object array or a primitive array.
 	 * @param obj the object to check
 	 */
 	public static boolean isArray(Object obj) {
 		return (obj != null && obj.getClass().isArray());
 	}

 	/*
 	 * Determine whether the given array is empty:
 	 * i.e. {@code null} or of zero length.
 	 * @param array the array to check
 	 */
 	public static boolean isEmpty(Object[] array) {
 		return (array == null || array.length == 0);
 	}

 	/*
 	 * Check whether the given array contains the given element.
 	 * @param array the array to check (may be {@code null},
 	 * in which case the return value will always be {@code false})
 	 * @param element the element to check for
 	 * @return whether the element has been found in the given array
 	 */
 	public static boolean containsElement(Object[] array, Object element) {
 		if (array == null) {
 			return false;
 		}
 		for (Object arrayEle : array) {
 			if (nullSafeEquals(arrayEle, element)) {
 				return true;
 			}
 		}
 		return false;
 	}

 	/*
 	 * Check whether the given array of enum constants contains a constant with the given name,
 	 * ignoring case when determining a match.
 	 * @param enumValues the enum values to check, typically the product of a call to MyEnum.values()
 	 * @param constant the constant name to find (must not be null or empty string)
 	 * @return whether the constant has been found in the given array
 	 */
 	public static boolean containsConstant(Enum<?>[] enumValues, String constant) {
 		return containsConstant(enumValues, constant, false);
 	}

 	/*
 	 * Check whether the given array of enum constants contains a constant with the given name.
 	 * @param enumValues the enum values to check, typically the product of a call to MyEnum.values()
 	 * @param constant the constant name to find (must not be null or empty string)
 	 * @param caseSensitive whether case is significant in determining a match
 	 * @return whether the constant has been found in the given array
 	 */
 	public static boolean containsConstant(Enum<?>[] enumValues, String constant, boolean caseSensitive) {
 		for (Enum<?> candidate : enumValues) {
 			if (caseSensitive ?
 					candidate.toString().equals(constant) :
 					candidate.toString().equalsIgnoreCase(constant)) {
 				return true;
 			}
 		}
 		return false;
 	}

 	/*
 	 * Case insensitive alternative to {@link Enum#valueOf(Class, String)}.
 	 * @param <E> the concrete Enum type
 	 * @param enumValues the array of all Enum constants in question, usually per Enum.values()
 	 * @param constant the constant to get the enum value of
 	 * @throws IllegalArgumentException if the given constant is not found in the given array
 	 * of enum values. Use {@link #containsConstant(Enum[], String)} as a guard to avoid this exception.
 	 */
 	public static <E extends Enum<?>> E caseInsensitiveValueOf(E[] enumValues, String constant) {
 		for (E candidate : enumValues) {
 			if(candidate.toString().equalsIgnoreCase(constant)) {
 				return candidate;
 			}
 		}
 		throw new IllegalArgumentException(
 				String.format("constant [%s] does not exist in enum type %s",
 						constant, enumValues.getClass().getComponentType().getName()));
 	}

 	/*
 	 * Append the given object to the given array, returning a new array
 	 * consisting of the input array contents plus the given object.
 	 * @param array the array to append to (can be {@code null})
 	 * @param obj the object to append
 	 * @return the new array (of the same component type; never {@code null})
 	 */
 	public static <A, O extends A> A[] addObjectToArray(A[] array, O obj) {
 		Class<?> compType = Object.class;
 		if (array != null) {
 			compType = array.getClass().getComponentType();
 		}
 		else if (obj != null) {
 			compType = obj.getClass();
 		}
 		int newArrLength = (array != null ? array.length + 1 : 1);
 		@SuppressWarnings("unchecked")
 		A[] newArr = (A[]) Array.newInstance(compType, newArrLength);
 		if (array != null) {
 			System.arraycopy(array, 0, newArr, 0, array.length);
 		}
 		newArr[newArr.length - 1] = obj;
 		return newArr;
 	}

 	/*
 	 * Convert the given array (which may be a primitive array) to an
 	 * object array (if necessary of primitive wrapper objects).
 	 * <p>A {@code null} source value will be converted to an
 	 * empty Object array.
 	 * @param source the (potentially primitive) array
 	 * @return the corresponding object array (never {@code null})
 	 * @throws IllegalArgumentException if the parameter is not an array
 	 */
 	public static Object[] toObjectArray(Object source) {
 		if (source instanceof Object[]) {
 			return (Object[]) source;
 		}
 		if (source == null) {
 			return new Object[0];
 		}
 		if (!source.getClass().isArray()) {
 			throw new IllegalArgumentException("Source is not an array: " + source);
 		}
 		int length = Array.getLength(source);
 		if (length == 0) {
 			return new Object[0];
 		}
 		Class<?> wrapperType = Array.get(source, 0).getClass();
 		Object[] newArray = (Object[]) Array.newInstance(wrapperType, length);
 		for (int i = 0; i < length; i++) {
 			newArray[i] = Array.get(source, i);
 		}
 		return newArray;
 	}


 	//---------------------------------------------------------------------
 	// Convenience methods for content-based equality/hash-code handling
 	//---------------------------------------------------------------------

 	/*
 	 * Determine if the given objects are equal, returning {@code true}
 	 * if both are {@code null} or {@code false} if only one is
 	 * {@code null}.
 	 * <p>Compares arrays with {@code Arrays.equals}, performing an equality
 	 * check based on the array elements rather than the array reference.
 	 * @param o1 first Object to compare
 	 * @param o2 second Object to compare
 	 * @return whether the given objects are equal
 	 * @see java.util.Arrays#equals
 	 */
 	public static boolean nullSafeEquals(Object o1, Object o2) {
 		if (o1 == o2) {
 			return true;
 		}
 		if (o1 == null || o2 == null) {
 			return false;
 		}
 		if (o1.equals(o2)) {
 			return true;
 		}
 		if (o1.getClass().isArray() && o2.getClass().isArray()) {
 			if (o1 instanceof Object[] && o2 instanceof Object[]) {
 				return Arrays.equals((Object[]) o1, (Object[]) o2);
 			}
 			if (o1 instanceof boolean[] && o2 instanceof boolean[]) {
 				return Arrays.equals((boolean[]) o1, (boolean[]) o2);
 			}
 			if (o1 instanceof byte[] && o2 instanceof byte[]) {
 				return Arrays.equals((byte[]) o1, (byte[]) o2);
 			}
 			if (o1 instanceof char[] && o2 instanceof char[]) {
 				return Arrays.equals((char[]) o1, (char[]) o2);
 			}
 			if (o1 instanceof double[] && o2 instanceof double[]) {
 				return Arrays.equals((double[]) o1, (double[]) o2);
 			}
 			if (o1 instanceof float[] && o2 instanceof float[]) {
 				return Arrays.equals((float[]) o1, (float[]) o2);
 			}
 			if (o1 instanceof int[] && o2 instanceof int[]) {
 				return Arrays.equals((int[]) o1, (int[]) o2);
 			}
 			if (o1 instanceof long[] && o2 instanceof long[]) {
 				return Arrays.equals((long[]) o1, (long[]) o2);
 			}
 			if (o1 instanceof short[] && o2 instanceof short[]) {
 				return Arrays.equals((short[]) o1, (short[]) o2);
 			}
 		}
 		return false;
 	}

 	/*
 	 * Return as hash code for the given object; typically the value of
 	 * {@code Object#hashCode()}}. If the object is an array,
 	 * this method will delegate to any of the {@code nullSafeHashCode}
 	 * methods for arrays in this class. If the object is {@code null},
 	 * this method returns 0.
 	 * @see #nullSafeHashCode(Object[])
 	 * @see #nullSafeHashCode(boolean[])
 	 * @see #nullSafeHashCode(byte[])
 	 * @see #nullSafeHashCode(char[])
 	 * @see #nullSafeHashCode(double[])
 	 * @see #nullSafeHashCode(float[])
 	 * @see #nullSafeHashCode(int[])
 	 * @see #nullSafeHashCode(long[])
 	 * @see #nullSafeHashCode(short[])
 	 */
 	public static int nullSafeHashCode(Object obj) {
 		if (obj == null) {
 			return 0;
 		}
 		if (obj.getClass().isArray()) {
 			if (obj instanceof Object[]) {
 				return nullSafeHashCode((Object[]) obj);
 			}
 			if (obj instanceof boolean[]) {
 				return nullSafeHashCode((boolean[]) obj);
 			}
 			if (obj instanceof byte[]) {
 				return nullSafeHashCode((byte[]) obj);
 			}
 			if (obj instanceof char[]) {
 				return nullSafeHashCode((char[]) obj);
 			}
 			if (obj instanceof double[]) {
 				return nullSafeHashCode((double[]) obj);
 			}
 			if (obj instanceof float[]) {
 				return nullSafeHashCode((float[]) obj);
 			}
 			if (obj instanceof int[]) {
 				return nullSafeHashCode((int[]) obj);
 			}
 			if (obj instanceof long[]) {
 				return nullSafeHashCode((long[]) obj);
 			}
 			if (obj instanceof short[]) {
 				return nullSafeHashCode((short[]) obj);
 			}
 		}
 		return obj.hashCode();
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(Object[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (Object element : array) {
 			hash = MULTIPLIER * hash + nullSafeHashCode(element);
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(boolean[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (boolean element : array) {
 			hash = MULTIPLIER * hash + hashCode(element);
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(byte[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (byte element : array) {
 			hash = MULTIPLIER * hash + element;
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(char[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (char element : array) {
 			hash = MULTIPLIER * hash + element;
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(double[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (double element : array) {
 			hash = MULTIPLIER * hash + hashCode(element);
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(float[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (float element : array) {
 			hash = MULTIPLIER * hash + hashCode(element);
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(int[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (int element : array) {
 			hash = MULTIPLIER * hash + element;
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(long[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (long element : array) {
 			hash = MULTIPLIER * hash + hashCode(element);
 		}
 		return hash;
 	}

 	/*
 	 * Return a hash code based on the contents of the specified array.
 	 * If {@code array} is {@code null}, this method returns 0.
 	 */
 	public static int nullSafeHashCode(short[] array) {
 		if (array == null) {
 			return 0;
 		}
 		int hash = INITIAL_HASH;
 		for (short element : array) {
 			hash = MULTIPLIER * hash + element;
 		}
 		return hash;
 	}

 	/*
 	 * Return the same value as {@link Boolean#hashCode()}}.
 	 * @see Boolean#hashCode()
 	 */
 	public static int hashCode(boolean bool) {
 		return (bool ? 1231 : 1237);
 	}

 	/*
 	 * Return the same value as {@link Double#hashCode()}}.
 	 * @see Double#hashCode()
 	 */
 	public static int hashCode(double dbl) {
 		return hashCode(Double.doubleToLongBits(dbl));
 	}

 	/*
 	 * Return the same value as {@link Float#hashCode()}}.
 	 * @see Float#hashCode()
 	 */
 	public static int hashCode(float flt) {
 		return Float.floatToIntBits(flt);
 	}

 	/*
 	 * Return the same value as {@link Long#hashCode()}}.
 	 * @see Long#hashCode()
 	 */
 	public static int hashCode(long lng) {
 		return (int) (lng ^ (lng >>> 32));
 	}


 	//---------------------------------------------------------------------
 	// Convenience methods for toString output
 	//---------------------------------------------------------------------

 	/*
 	 * Return a String representation of an object's overall identity.
 	 * @param obj the object (may be {@code null})
 	 * @return the object's identity as String representation,
 	 * or an empty String if the object was {@code null}
 	 */
 	public static String identityToString(Object obj) {
 		if (obj == null) {
 			return EMPTY_STRING;
 		}
 		return obj.getClass().getName() + "@" + getIdentityHexString(obj);
 	}

 	/*
 	 * Return a hex String form of an object's identity hash code.
 	 * @param obj the object
 	 * @return the object's identity code in hex notation
 	 */
 	public static String getIdentityHexString(Object obj) {
 		return Integer.toHexString(System.identityHashCode(obj));
 	}

 	/*
 	 * Return a content-based String representation if {@code obj} is
 	 * not {@code null}; otherwise returns an empty String.
 	 * <p>Differs from {@link #nullSafeToString(Object)} in that it returns
 	 * an empty String rather than "null" for a {@code null} value.
 	 * @param obj the object to build a display String for
 	 * @return a display String representation of {@code obj}
 	 * @see #nullSafeToString(Object)
 	 */
 	public static String getDisplayString(Object obj) {
 		if (obj == null) {
 			return EMPTY_STRING;
 		}
 		return nullSafeToString(obj);
 	}

 	/*
 	 * Determine the class name for the given object.
 	 * <p>Returns {@code "null"} if {@code obj} is {@code null}.
 	 * @param obj the object to introspect (may be {@code null})
 	 * @return the corresponding class name
 	 */
 	public static String nullSafeClassName(Object obj) {
 		return (obj != null ? obj.getClass().getName() : NULL_STRING);
 	}

 	/*
 	 * Return a String representation of the specified Object.
 	 * <p>Builds a String representation of the contents in case of an array.
 	 * Returns {@code "null"} if {@code obj} is {@code null}.
 	 * @param obj the object to build a String representation for
 	 * @return a String representation of {@code obj}
 	 */
 	public static String nullSafeToString(Object obj) {
 		if (obj == null) {
 			return NULL_STRING;
 		}
 		if (obj instanceof String) {
 			return (String) obj;
 		}
 		if (obj instanceof Object[]) {
 			return nullSafeToString((Object[]) obj);
 		}
 		if (obj instanceof boolean[]) {
 			return nullSafeToString((boolean[]) obj);
 		}
 		if (obj instanceof byte[]) {
 			return nullSafeToString((byte[]) obj);
 		}
 		if (obj instanceof char[]) {
 			return nullSafeToString((char[]) obj);
 		}
 		if (obj instanceof double[]) {
 			return nullSafeToString((double[]) obj);
 		}
 		if (obj instanceof float[]) {
 			return nullSafeToString((float[]) obj);
 		}
 		if (obj instanceof int[]) {
 			return nullSafeToString((int[]) obj);
 		}
 		if (obj instanceof long[]) {
 			return nullSafeToString((long[]) obj);
 		}
 		if (obj instanceof short[]) {
 			return nullSafeToString((short[]) obj);
 		}
 		String str = obj.toString();
 		return (str != null ? str : EMPTY_STRING);
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(Object[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append(String.valueOf(array[i]));
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(boolean[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}

 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(byte[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(char[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append("'").append(array[i]).append("'");
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(double[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}

 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(float[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}

 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(int[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(long[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 	/*
 	 * Return a String representation of the contents of the specified array.
 	 * <p>The String representation consists of a list of the array's elements,
 	 * enclosed in curly braces ({@code "{}"}). Adjacent elements are separated
 	 * by the characters {@code ", "} (a comma followed by a space). Returns
 	 * {@code "null"} if {@code array} is {@code null}.
 	 * @param array the array to build a String representation for
 	 * @return a String representation of {@code array}
 	 */
 	public static String nullSafeToString(short[] array) {
 		if (array == null) {
 			return NULL_STRING;
 		}
 		int length = array.length;
 		if (length == 0) {
 			return EMPTY_ARRAY;
 		}
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < length; i++) {
 			if (i == 0) {
 				sb.append(ARRAY_START);
 			}
 			else {
 				sb.append(ARRAY_ELEMENT_SEPARATOR);
 			}
 			sb.append(array[i]);
 		}
 		sb.append(ARRAY_END);
 		return sb.toString();
 	}

 }

